Which of the Following Statements Concerning Boron Compounds Is Incorrect

Multiple Choice

Which of the following statements concerning boron compounds is incorrect?

A) More than 20 neutral boron hydrides (general formula B_xH_y) are known.
B) The two boron atoms in B₂H₆ are connected by three-center,two-electron B-H-B bridges.
C) Borax,Na₂B₄O₇⋅10 H₂O,is used as a low-melting flux in metallurgy.
D) Sodium borohydride,NaBH₄,is a reducing agent used in organic chemistry.
E) Diborane,B₂H₆,is used as an oxidizing agent in organic chemistry.